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Old 03-22-2005, 05:25 AM
fimbulwinter fimbulwinter is offline
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Join Date: Jun 2004
Location: takin turns dancin with maria
Posts: 317
Default How much does this screw up my SD calculations?

since becoming a live player, i've kept records of my live play by $/hour rather than by BB/100. when i enter the data and do my analysis of hourly rate, SD etc. i just use the mean from the day in terms of hourly rate.

like say for example i play 8 hours and lose $400; i would enter (-50, -50, -50, -50, -50, -50, -50, -50) into excel as the data points for that day instead of (70, -25, -125, 30 etc.) as it probably actually happened at the casino.

I realize this doesn't affect my mean, but it must skew my standard deviation, right? or maybe it doesnt when taken in the context of many sessions reported this same way? any way to counteract/account for this? Do live players who do this keep a notepad and take record of their stacks every hour?

FWIW right now i have maybe 300 hours of live play on the books with most sessions lasting 8 or more hours, but a smattering of smaller ones.

thanks to those who are good at math,

fim
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